1. Physiography and glacial geology of eastern Montana and adjacent areas;Alden;United States Geological Survey, Professional,1932
2. Glacial stratigraphy and the limits of the Rocky Mountain and Laurentide ice sheets in southwestern Alberta, Canada;Alley;Canadian Petroleum Geology, Bulletin,1973
3. Post Pleistocene glaciations in the interior of British Columbia;Alley,1976
4. The palynology and palaeoclimatic significance of a dated core of Holocene peat, Okanagan Valley, southern British Columbia;Alley;Canadian Journal of Earth Sciences,1976
5. Middle Wisconsin stratigraphy and climatic reconstruction, southern Vancouver Island, British Columbia;Alley;Quaternary Research,1979